Here's a contact for EAW mounts through New England Custom Guns, hope it helps.
http://www.newenglandcustomgun.com/Gun_Services/Scope_Mounts.asp

I've mostly used Redfield scope mounts over the years, and they work fine, and probably the most reasonably priced out there these days, considering. Or a copy of the same.
Griffin & Howe side mounts are a delight, allowing for quick attaching/removal when wanting iron sight use. Though very pricey anymore!
Jaeger side mounts as good as the Griffin & Howe, havd one mounted on a Model 1903, just very difficult to find anymore, seeing as how most are already mounted on a rifle. In 1978 bought a Weaver 3x, when they offered the German #1 reticle, sending both off to Jaeger for them to install their side mounting system.
Might be able to locate on of the old Leupold scope mounts, but again, mostly there are already mounted on a rifle.
Williams and Pachmyr side mounts are as ugly as they come! ugh
EAW mounts and installation is costly, but top a notch setup, and NECG does very quality work.

Being a newby here not able to post a picture yet - guess have to do a few posts before can add a picture? Otherwise would post a picture of a Pre-WWII German scope mount on another Model 1903, which is similar to the Jaeger quick detachable side mount.